Radar cover

Abstract

The utility model relates to a radome, which comprises an outer housing, the outer cover shell covers the outer side of the inner cover shell, and the outer cover shell and the outer wall of the inner cover shell are arranged in a spaced mode; the edge of the outer cover shell is arranged on the edge of the outer side of the annular connecting plate, the edge of the inner cover shell is arranged on the edge of the inner side of the annular connecting plate, a heating cavity is defined by the outer cover shell, the inner cover shell and the annular connecting plate, and an electric connecting hole is formed in the annular connecting plate; the heating cavity is filled with the graphene filler in a grid shape, and the graphene filler makes contact with the inner wall of the outer cover shell and the outer wall of the inner cover shell at the same time; and the conductive wire penetrates through the electric connection hole, and the end part, in the heating cavity, of the conductive wire is in contact with the graphene filler.

Description

Technical Field

[0001] The utility model relates to the field of radomes, in particular to a radome. Background Art

[0002] The sandwich radome includes an outer cover shell, an inner cover shell and a core layer, and the core layer is located between the outer cover shell and the inner cover shell. The core layer is usually a porous structure, so the core layer is prone to deformation when under pressure. Under heavy rain and snow weather conditions, the temperature of the outer cover shell drops sharply. Since the inner cover shell is spaced apart from the outer cover shell, there is a certain temperature difference between the inner and outer cover shells, which leads to differences in the deformation of the outer and inner cover shells due to temperature changes. The outer cover shell often undergoes a larger shrinkage deformation due to the lower temperature, while the shrinkage deformation of the inner cover shell is relatively small. In addition, the porous and compressible characteristics of the core layer also lead to a reduction in the distance between the outer cover shell and the inner cover shell in low temperature environments such as heavy rain and snow, which results in additional errors in the transmission and reception of radar signals. Utility Model Content

[0003] Based on this, it is necessary to provide a radome to address the problem of large errors in radar signal transmission and reception under heavy rain and snow weather conditions.

[0004] A radome, comprising:

[0005] Outer casing;

[0006] An inner cover shell, wherein the outer cover shell is disposed on the outer side of the inner cover shell and is spaced apart from the outer wall of the inner cover shell;

[0007] an annular connecting plate, wherein the edge of the outer cover shell is arranged on the outer edge of the annular connecting plate, the edge of the inner cover shell is arranged on the inner edge of the annular connecting plate, the outer cover shell, the inner cover shell and the annular connecting plate are arranged to form a heating chamber, and an electrical connection hole is provided on the annular connecting plate;

[0008] A graphene filler, wherein the graphene filler is filled in the heating chamber in a grid shape, and the graphene filler simultaneously contacts the inner wall of the outer cover shell and the outer wall of the inner cover shell; and

[0009] A conductive wire passes through the electrical connection hole, and an end of the conductive wire in the heating chamber contacts the graphene filler.

[0010] The outer edge of the annular connecting plate of the utility model is provided with an outer limiting plate, and the inner edge of the annular connecting plate is provided with an inner limiting plate. The outer limiting plate, the annular connecting plate and the inner limiting plate are arranged to form a limiting groove. The edge of the outer cover shell is located in the limiting groove and abuts against the outer limiting plate, and the edge of the inner cover shell is located in the limiting groove and abuts against the inner limiting plate.

[0011] The utility model describes that the outer limiting plate is elastically connected to the annular connecting plate, the outer limiting plate is provided with a first positioning column, the outer wall of the outer cover shell is provided with a first positioning groove, and the first positioning column is located in the first positioning groove.

[0012] The outer wall surface of the outer cover shell of the utility model is concave to form a first avoidance groove, and the outer limiting plate is located in the first avoidance groove.

[0013] The radome of the utility model also includes an inner support base plate and a telescopic rod. The outer edge of the inner support base plate is fixed to the inner edge of the annular connecting plate. The inner support base plate and the inner cover shell are arranged to form an inner support cavity. The telescopic rod is located in the inner support cavity. One end of the telescopic rod is arranged on the inner support base plate, and the other end is arranged on the inner wall of the inner cover shell.

[0014] The utility model provides a wiring hole on the inner support base plate, and the wiring hole is used for allowing communication cables to enter the inner support cavity.

[0015] The outer wall surface of the outer cover shell of the utility model is provided with a first humidity sensor, the radar cover also includes a control board, and the end of the conductive wire outside the heating chamber and the first humidity sensor are both electrically connected to the control board.

[0016] The inner wall of the inner cover shell of the utility model is provided with a second humidity sensor, and the second humidity sensor is electrically connected to the control board.

[0017] The end of the telescopic rod of the utility model is hinged to the inner supporting base plate so that the telescopic rod is arranged along the radial direction of the inner cover shell.

[0018] The thickness of the graphene filler of the utility model is less than 5 mm.

[0019] The beneficial effects of the utility model are:

[0020] When heavy rain or snow causes a sudden drop in ambient temperature, the conductive wire can supply power to the graphene filler in the heating chamber through the electrical connection hole, and the graphene filler can directly heat the outer cover shell and the inner cover shell in contact with it, thereby reducing the shrinkage deformation of the outer cover shell and the inner cover shell. The good thermal conductivity of the graphene filler itself can also reduce the temperature difference between the outer cover shell and the inner cover shell.

[0021] Therefore, the heat generated by the graphene filler can avoid a significant reduction in the distance between the outer cover shell and the inner cover shell, thereby improving the quality of signal reception and transmission in heavy rain and snow environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the radome in the embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the cross-sectional structure of the radome in the embodiment of the utility model;

[0024] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the annular connecting plate and the inner supporting base plate in the embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the inner cover shell in the embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the outer cover shell in the embodiment of the utility model;

[0028] Figure 7 for Figure 6 Enlarged structural diagram at B in the middle.

[0029] Reference numerals:

[0030] 1. Outer cover shell; 11. First positioning groove; 12. First avoidance groove; 13. First spherical cover; 14. First cylindrical cover; 2. Inner cover shell; 21. Second spherical cover; 22. Second cylindrical cover; 3. Annular connecting plate; 31. Limiting groove; 32. Outer limiting plate; 321. First positioning column; 33. Inner limiting plate; 4. Heating chamber; 5. Inner supporting chamber; 6. Inner supporting substrate; 61. Wiring hole. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0037] Example:

[0038] See also Figure 1-Figure 7 This embodiment provides a radar cover, including an outer cover shell 1, an inner cover shell 2, an annular connecting plate 3, a graphene filler (not shown in the figure) and a conductive wire (not shown in the figure).

[0039] See Figure 6 In this embodiment, the outer cover shell 1 includes a first spherical cover 13 and a first cylindrical cover 14. The outer wall surface and the inner wall surface of the first spherical cover 13 are both hemispherical surfaces, the first cylindrical cover 14 is annular, and the inner wall surface and the outer wall surface of the first cylindrical cover 14 are both cylindrical surfaces. The opening edge of the first spherical cover 13 and the opening edge of one end of the first cylindrical cover 14 are fixed integrally, that is, the first spherical cover 13 and the first cylindrical cover 14 have the same inner and outer diameters.

[0040] Similarly, see Figure 5 The inner cover shell 2 includes a second spherical cover 21 and a second cylindrical cover 22. The outer wall surface and the inner wall surface of the second spherical cover 21 are both hemispherical surfaces. The second cylindrical cover 22 is annular. The inner wall surface and the outer wall surface of the second cylindrical cover 22 are both cylindrical surfaces. The opening edge of the second spherical cover 21 and the opening edge of one end of the second cylindrical cover 22 are fixed integrally, that is, the second spherical cover 21 and the second cylindrical cover 22 have the same inner and outer diameters.

[0041] The first cylindrical cover 14 and the second cylindrical cover 22 have the same length, and the inner diameter of the first cylindrical cover 14 is greater than the outer diameter of the second cylindrical cover 22. Figure 2 , so that the outer cover shell 1 can be covered on the outer side of the inner cover shell 2, so that the inner wall of the outer cover shell 1 can be spaced apart from the outer wall of the inner cover shell 2. The first cylindrical cover 14 and the second cylindrical cover 22 are coaxially arranged, the first cylindrical cover 14 is arranged around the outer side of the second cylindrical cover 22, and the first spherical cover 13 is arranged on the outer side of the second spherical cover 21.

[0042] See also Figure 2-Figure 4The annular connecting plate 3 is a circular annular flat plate, the first cylindrical cover 14 and the second cylindrical cover 22 are located on the same side of the annular connecting plate 3, wherein the bottom opening edge of the first cylindrical cover 14 is arranged at the outer edge of the annular connecting plate 3, and the bottom opening edge of the second cylindrical cover 22 is arranged at the inner edge of the annular connecting plate 3, thereby the outer cover shell 1, the inner cover shell 2 and the annular connecting plate 3 are surrounded to form a heating chamber 4, and the graphene filler is in a grid shape and filled in the heating chamber 4. Since the graphene filler has a strong absorption effect on the signal, in order to reduce the influence of this effect, the graphene filler should not be too thick, so the thickness of the graphene filler in this embodiment is less than 5mm.

[0043] It is easy to understand that the radial spacing between the first cylindrical cover 14 and the second cylindrical cover 22 at normal ambient temperature is substantially equal to the radial spacing between the first spherical cover 13 and the second spherical cover 21. The annular connecting plate 3 is provided with an electrical connection hole, through which the conductive wire passes, one end of the conductive wire is located in the heating chamber 4 and in contact with the graphene filler, and the other end is located outside the heating chamber 4. In addition, the graphene filler is also in contact with the inner wall of the outer cover shell 1, so that the conductive wire can supply power to the graphene filler, so as to allow the graphene filler to generate Joule heat to directly heat the outer cover shell 1.

[0044] When the ambient temperature of the radome drops suddenly, the outer shell 1 shrinks. Since there is a certain temperature difference between the outer shell 1 and the inner shell 2, the shrinkage deformation of the outer shell 1 is often greater than that of the inner shell 2, which results in a decrease in the distance between the outer shell 1 and the inner shell 2. At this time, the graphene filler can be energized to directly heat the outer shell 1, thereby reducing the shrinkage deformation of the outer shell 1, so as to minimize the decrease in the distance between the outer shell 1 and the inner shell 2. After the outer shell 1 is heated, it can also accelerate the evaporation and melting of the accumulated water and snow on its outer wall, reducing the interference of the accumulated water and snow on the signal reception and transmission.

[0045] Furthermore, if the graphene filler is also in contact with the inner cover shell 2, the good thermal conductivity of the graphene filler can be used to reduce the temperature difference between the outer cover shell 1 and the inner cover shell 2, thereby reducing the difference in deformation between the outer cover shell 1 and the inner cover shell 2.

[0046] See also Figure 3 and Figure 4, an outer limit plate 32 is provided on the outer edge of the annular connecting plate 3, and an inner limit plate 33 is provided on the inner edge of the annular connecting plate 3. The inner limit plate 33 is a complete cylindrical ring, and the outer limit plate 32 is a part of the cylindrical ring. The outer limit plate 32, the annular connecting plate 3 and the inner limit plate 33 are arranged to form a limit groove 31. The opening edge of the outer cover shell 1 is located in the limit groove 31 and abuts against the outer limit plate 32. The opening edge of the inner cover shell 2 is located in the limit groove 31 and abuts against the inner limit plate 33. The graphene filler at the location of the limit groove 31 can appropriately increase the filling density, so the graphene filler at this location is less susceptible to compression deformation. Based on the internal support effect of the graphene filler at this location, the outer cover shell 1 and the inner cover shell 2 are both radially positioned on the annular connecting plate 3. The outer cover shell 1 and the inner cover shell 2 are also supported on the annular connecting plate 3 at the same time.

[0047] In some embodiments, the outer wall surface of the first cylindrical cover 14 and the outer limiting plate 32 may be adhered and fixed, and the inner wall surface of the second cylindrical cover 22 and the inner limiting plate 33 may be adhered and fixed.

[0048] See also Figure 3 , Figure 4 and Figure 7 In this embodiment, a first positioning column 321 is arranged on the inner wall surface of the outer limiting plate 32, and a first positioning groove 11 is correspondingly arranged on the outer wall of the first cylindrical cover 14. The outer limiting plate 32 is elastically connected to the annular connecting plate 3. Since the outer limiting plate 32 is not a complete cylindrical ring, the outer limiting plate 32 can make the first positioning column 321 enter and exit the first positioning groove 11 by elastic deformation on the annular connecting plate 3. When the first positioning column 321 is located in the first positioning groove 11, the outer cover shell 1 can obtain axial and circumferential positioning effects on the annular connecting plate 3. When the first positioning column 321 leaves the first positioning groove 11, the outer cover shell 1 can be axially moved on the annular connecting plate 3, and then disassembled and assembled.

[0049] Furthermore, the outer wall surface of the first cylindrical cover 14 is concave to form the first avoidance groove 12, and the first positioning groove 11 is located on the side wall of the first avoidance groove 12. The shape of the outer limit plate 32 is adapted to the first avoidance groove 12, so that the outer limit plate 32 can be filled in the first avoidance groove 12 and fit with the side wall of the first avoidance groove 12. In this way, the limit plate 32 can avoid convexity, so that the accumulated water and snow on the first spherical cover 13 can slide onto the limit plate 32 more smoothly.

[0050] The radome of this embodiment further includes an inner support base plate 6, which is a circular plate. The outer edge of the inner support base plate 6 is fixed to the inner edge of the annular connecting plate 3. Normally, the inner support base plate 6 and the annular connecting plate 3 are an integral structure. The inner support base plate 6 and the inner cover shell 2 are arranged to form an inner support cavity 5. A wiring hole 61 is provided on the inner support base plate 6. Under normal circumstances, the communication cable can enter the inner support cavity 5 through the wiring hole 61.

[0051] In some other embodiments, the radome further comprises a telescopic rod, which is located in the inner support cavity 5, one end of the telescopic rod is arranged on the inner support substrate 6, and the other end is abutted against the inner wall of the inner cover shell 2. In some high temperature environments, the graphene filler is not energized, and the temperature of the outer cover shell 1 is higher than that of the inner cover shell 2, resulting in a greater thermal expansion deformation of the outer cover shell 1, which increases the distance between the inner wall of the outer cover shell 1 and the outer wall of the inner cover shell 2, and may even cause the separation of the graphene filler and the inner cover shell 2. At this time, the telescopic rod can generate an additional thrust on the inner wall of the inner cover shell 2, so that the inner cover shell 2 generates an additional deformation, so that the distance between the inner wall of the outer cover shell 1 and the outer wall of the inner cover shell 2 remains substantially constant. In this part of the embodiments, since the wiring hole 61 is not at the center of the inner support substrate 6, the end of the telescopic rod can be arranged at the center of the inner support substrate 6, so that the telescopic rod generates a radial thrust on the inner wall of the inner cover shell 2, and the inner cover shell 2 can make full use of the thrust of the telescopic rod to generate a sufficiently large deformation. Additionally, the number of telescopic rods can be multiple, so as to support different positions of the inner wall of the inner cover shell 2, so that the spacing between the inner wall of the outer cover shell 1 and the outer wall of the inner cover shell 2 at different positions is kept as consistent as possible. Further preferably, the inner support base plate 6 and the end of the telescopic rod are hinged to allow the telescopic rod to change the position of its end on the inner wall of the inner cover shell 2.

[0052] Further preferably, a first humidity sensor is provided on the outer wall of the outer cover shell 1, the radome further comprises a control board, and the end of the conductive wire outside the heating chamber 4 and the first humidity sensor are both electrically connected to the control board. When the first humidity sensor detects that there is rain or snow on the outer wall of the outer cover shell 1, the conductive wire starts to supply power to the graphene filler, thereby increasing the temperature of the outer cover shell 1 and avoiding the influence of rain and snow on signal transmission.

[0053] Water vapor can enter the inner support cavity 5 through the wiring hole 61. When the humidity in the inner support cavity 5 is too high, condensation will occur. In addition, there are cables in the inner support cavity 5, which leads to some safety hazards. For this reason, a second humidity sensor is provided on the inner wall of the inner cover shell 2, and the second humidity sensor is electrically connected to the control board. When the humidity in the inner support cavity 5 is too high, the graphene filler can also be properly energized to generate heat, and the temperature in the inner support cavity 5 is increased through the inner cover shell 2, thereby reducing the risk of condensation in the inner support cavity 5. It is easy to understand that at this time, by utilizing the good thermal conductivity of the graphene filler, the inner cover shell 2 and the outer cover shell 1 can also be kept at roughly the same temperature. Therefore, the thermal deformation of the inner cover shell 2 and the outer cover shell 1 is not much different, so the distance between the inner cover shell 2 and the outer cover shell 1 will not change significantly.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A radome, characterized in that: include: An outer casing (1); An inner cover shell (2), wherein the outer cover shell (1) is disposed on the outer side of the inner cover shell (2) and is spaced apart from the outer wall of the inner cover shell (2); an annular connecting plate (3), wherein the edge of the outer cover shell (1) is arranged on the outer edge of the annular connecting plate (3), and the edge of the inner cover shell (2) is arranged on the inner edge of the annular connecting plate (3); the outer cover shell (1), the inner cover shell (2) and the annular connecting plate (3) are arranged to form a heating chamber (4); and an electrical connection hole is provided on the annular connecting plate (3); Graphene filler, the graphene filler is filled in the heating chamber (4) in a grid shape, and the graphene filler simultaneously contacts the inner wall of the outer casing (1) and the outer wall of the inner casing (2); and A conductive wire passes through the electrical connection hole, and an end of the conductive wire in the heating chamber (4) contacts the graphene filler.

2. The radome according to claim 1, characterized in that: An outer limit plate (32) is provided on the outer edge of the annular connecting plate (3), and an inner limit plate (33) is provided on the inner edge of the annular connecting plate (3). The outer limit plate (32), the annular connecting plate (3) and the inner limit plate (33) are arranged to form a limit groove (31). The edge of the outer cover shell (1) is located in the limit groove (31) and abuts against the outer limit plate (32), and the edge of the inner cover shell (2) is located in the limit groove (31) and abuts against the inner limit plate (33).

3. The radome according to claim 2, characterized in that: The outer limiting plate (32) is elastically connected to the annular connecting plate (3), a first positioning column (321) is provided on the outer limiting plate (32), an outer wall of the outer cover shell (1) is provided with a first positioning groove (11), and the first positioning column (321) is located in the first positioning groove (11).

4. The radome according to claim 2, characterized in that: The outer wall surface of the outer cover shell (1) is concave to form a first avoidance groove (12), and the outer limit plate (32) is located in the first avoidance groove (12).

5. The radome according to claim 1, characterized in that: The radome further comprises an inner support base plate (6) and a telescopic rod, the outer edge of the inner support base plate (6) being fixed to the inner edge of the annular connecting plate (3), the inner support base plate (6) and the inner cover shell (2) forming an inner support cavity (5), the telescopic rod being located in the inner support cavity (5), one end of the telescopic rod being arranged on the inner support base plate (6), and the other end being arranged on the inner wall of the inner cover shell (2).

6. The radome according to claim 5, characterized in that: The inner support base plate (6) is provided with a wiring hole (61), and the wiring hole (61) is used for allowing communication cables to enter the inner support cavity (5).

7. The radome according to claim 6, characterized in that: The outer wall surface of the outer cover shell (1) is provided with a first humidity sensor, the radome also includes a control board, and the end of the conductive wire outside the heating chamber (4) and the first humidity sensor are both electrically connected to the control board.

8. The radome according to claim 7, characterized in that: The inner wall of the inner casing (2) is provided with a second humidity sensor, and the second humidity sensor is electrically connected to the control board.

9. The radome according to claim 5, characterized in that: The end of the telescopic rod is hinged to the inner supporting base plate (6) so that the telescopic rod is arranged along the radial direction of the inner cover shell (2).

10. The radome according to claim 1, characterized in that: The thickness of the graphene filler is less than 5 mm.

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